If you use the radio button from the system palette, you get just that. It is a simple Boolean that looks like a radio button. You can define the logic yourself and make them work however you want them to.

EDIT: I guess this is my first lesson in using the new Click to reply directly to this post feature of the RSS feeds. My feeds hadn't updated yet so I had not read all the replies before I posted. I'll have to watch for that

If you use the radio button from the system palette, you get just that. It is a simple Boolean that looks like a radio button. You can define the logic yourself and make them work however you want them to.

Yes, you can do that but it's not a good idea to break user expectations of what a radio button represents. Checkboxes would be better in this case.